Herbs perennial. Roots fibrous, subequally thick. Stems ca. 36 cm, glabrous below, sparsely appressed puberulent above, branched. Basal leaves 7--12; petiole 7--14 cm, glabrous; blade 3-partite, cuneate to rhombic, 2.2--4.5 × 0.8--3.3 cm, papery, glabrous, rarely abaxially very sparsely appressed puberulent, base cuneate, central lobe lanceolate-linear, entire; lateral lobes lanceolate-linear or obliquely narrowly cuneate, unequally 2-lobed or undivided. Stem leaves 1 or 2, short petiolate or sessile, 3-partite, 2.5--4 cm, lobes narrowly linear. Monochasia terminal and axillary, 1--3-flowered; bracts lanceolate-linear. Flowers 1.2--1.3 cm in diam. Pedicel 2--5 cm, puberulent above. Receptacle glabrous. Sepals 5, navicular-elliptic, 4.5--5 mm, abaxially yellowish appressed, puberulent. Petals 5, obovate, 5.5--7 × 4--5 mm, nectary pit without a scale, apex rounded. Stamens 14--23; anthers broadly oblong. Aggregate fruit ovoid, ca. 5.5 × 4 mm. Achene obliquely obovoid, ca. 2.5 × 1.2 mm, glabrous; style persistent, ca. 1 mm. Fl. Aug.

* Swamps; ca. 3200 m. NW Yunnan.